Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1acfe3fa8c4bb5c844a25bd5422dead6741d24babd735a1a969c55d752442af8' 
  AND token = 'Fls+MW/BawEhlGHO6Gp1/0RKAD5tpeJnaEkBmnZhzHI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}